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Jan 1, 1500
Graphite Deposits Found
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Graphite is no longer unique.
Unable to get graphite from England because of the war, Conté in Paris produces artificial graphite. Borrowdale Graphite is no longer unique. -
Pencil Making Machine
William Monroe in US invented a machine capable of making groves in wooden slats for making pencils. -
Factory is taken over
Greenwood family take over the pencil factory as payment for a bad debt. -
Cumberland Pencil Co.
Name of the company is changed to Cumberland Pencil Co. -
British pens
Company taken over by British Pens Ltd & start building the current factory. -
Pencil making factories
Four factories recorded in Keswick. -
Heavy metals in pencils
DES memo 2/65 set out limitations on use of heavy metals in pencils supplied to schools. -
Stetching and Drawing pencils
Developed Derwent Sketching & Drawing pencils -
Derwent Pastel Pencils
New softer Derwent Pastel Pencils are launched
